CRIME: Percy Lead No. 273

One morning in the midst of his successful 1966 bid for a seat in the U.S. Senate, Illinois'
Charles H. Percy was awakened by his wife's screams. He set off the piercing burglar alarm
atop their 17-room mansion in Kenilworth, a suburb of Chicago. When he entered the
bedroom of his 21-year-old twin daughter Valerie, the girl lay agonizingly near
deathher face, chest and stomach mutilated by stab wounds. In the
seven years since the slaying, Illinois state police have interviewed
more than 14,000 people, spent over $300,000, and painstakingly pursued
1,317 leads. Last week the...